X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2Frender_base.h;h=4aea45469824baed9111d9234950b178da082edf;hb=e28331ed63062dea10d0a21b9ec12034b4b17b9a;hp=20285f5fd8c5c6d8b3da2555cc91ce3b38f0b6c9;hpb=122e7616d75f7148068f55634d145b942183dc44;p=lyx.git

diff --git a/src/insets/render_base.h b/src/insets/render_base.h
index 20285f5fd8..4aea454698 100644
--- a/src/insets/render_base.h
+++ b/src/insets/render_base.h
@@ -14,28 +14,54 @@
 
 #include "dimension.h"
 
+#include <memory>
+
+
+namespace lyx {
+
+class InsetBase;
 class MetricsInfo;
 class PainterInfo;
 
+class RenderButton;
+class RenderGraphic;
+class RenderPreview;
+class RenderMonitoredPreview;
 
 class RenderBase {
 public:
 	virtual ~RenderBase() {}
 
-	virtual RenderBase * clone() const = 0;
+	virtual std::auto_ptr<RenderBase> clone(InsetBase const *) const = 0;
 
-	/// compute the size of the object returned in dim
-	virtual void metrics(MetricsInfo & mi, Dimension & dim) const = 0;
+	/// compute the size of the object returned in dim.
+	/// \retval true if the metrics has changed.
+	virtual bool metrics(MetricsInfo & mi, Dimension & dim) const = 0;
 	/// draw inset and update (xo, yo)-cache
 	virtual void draw(PainterInfo & pi, int x, int y) const = 0;
+	/// render state, exact meaning of state is render-specific
+	void setRenderState(int state) { state_ = state; }
+	/// get render state
+	int renderState() const { return state_; } 
+
+	/// equivalent to dynamic_cast
+	virtual RenderButton * asButton() { return 0; }
+	virtual RenderGraphic * asGraphic() { return 0; }
+	virtual RenderPreview * asPreview() { return 0; }
+	virtual RenderMonitoredPreview * asMonitoredPreview() { return 0; }
 
 protected:
 	RenderBase() {}
 	RenderBase(RenderBase const &) {}
-	void operator=(RenderBase const &) {}
+	RenderBase & operator=(RenderBase const &) { return *this; }
 
+	/// render state. currently, render_button uses this to store mouse_hover_
+	int state_;
 	/// Cached
 	mutable Dimension dim_;
 };
 
+
+} // namespace lyx
+
 #endif // NOT RENDER_BASE_H